"With a good ejector pump and a couple of extra work days, you can make any basement bath drain uphill"

The biggest single factor determining the
ease, practicality, and expense of a basement
bathroom installation is the height at which
the house's main drain pipe exits the foundation
wall. Since this pipe must run slightly
downhill from the house, the height of the
sewer or septic system will determine the
height that the pipe exits the basement.
With a sewer, the height is predetermined by
the depth at which the town or city installs
its drain system. With a septic tank or
cesspool, the height is generally determined
by the height of the existing water table.
If your client is one of a lucky few, the
drain pipe will exit at a level below